CN112852072A - Flame-retardant polyester fiber internal reinforced PVC (polyvinyl chloride) waterproof coiled material, preparation method and system - Google Patents

Flame-retardant polyester fiber internal reinforced PVC (polyvinyl chloride) waterproof coiled material, preparation method and system Download PDF

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CN112852072A
CN112852072A CN202110232985.0A CN202110232985A CN112852072A CN 112852072 A CN112852072 A CN 112852072A CN 202110232985 A CN202110232985 A CN 202110232985A CN 112852072 A CN112852072 A CN 112852072A
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flame
retardant
polyester fiber
kaolin
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薛韬
白中辉
刘得怀
赵宝年
赵海强
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China Machinery Industry No4 Construction Engineering Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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    • C08L2201/02—Flame or fire retardant/resistant
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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Abstract

The invention belongs to the technical field of waterproof coiled materials and discloses a flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material, a preparation method and a system, wherein the flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material is composed of, by mass, 10-20 parts of PVC resin powder, 3-7 parts of nano flame-retardant particles, 4-9 parts of kaolin, 3-4 parts of nano aluminum hydroxide, 1-3 parts of an antioxidant, 1-2 parts of a light stabilizer, 2-3 parts of a surfactant, 4-8 parts of talcum powder and 10-20 parts of polyester fibers. The middle layer of the flame-retardant polyester fiber internal enhancement type PVC waterproof coiled material is a flame-retardant polyester fiber fabric, and the outer layer is coated with a PVC layer, so that the improvement of fireproof and flame-retardant effects can be realized; materials with good flame retardant effect, such as an antioxidant, PVC resin, nano flame-retardant particles, kaolin and the like, are added in the preparation of the PVC layer, the prepared PVC layer can be effectively sealed and isolated, and the improvement of the fireproof effect is realized.

Description

Flame-retardant polyester fiber internal reinforced PVC (polyvinyl chloride) waterproof coiled material, preparation method and system
Technical Field
The invention belongs to the technical field of waterproof coiled materials, and particularly relates to a flame-retardant polyester fiber internal reinforced PVC waterproof coiled material, and a preparation method and a system thereof.
Background
At present, the polyester fiber internal reinforced polyvinyl chloride waterproof coiled material is a thermoplastic PVC coiled material, and the coiled material uses polyester fiber fabric as a reinforcing rib, and combines a double-sided polyvinyl chloride plastic layer and a middle polyester reinforcing rib into a whole through a special coating process to form a high polymer coiled material.
The PVC plastic layer is combined with the fiber fabric with a net structure, so that the coiled material has excellent dimensional stability and lower thermal expansion coefficient, has higher tensile strength and good extensibility than a PVC waterproof coiled material without a reinforcing rib layer, is widely popular in waterproof engineering, but is easy to burn in a combustion-supporting substance such as air environment because the burning point of polyester fiber is about 550 ℃ and the burning point of domestic PVC is only about 200 ℃. However, the preparation method of the temporary flame-retardant polyester fiber internal reinforced PVC waterproof roll in the prior art cannot realize the improvement of the fireproof and flame-retardant effects.
Through the above analysis, the problems and defects of the prior art are as follows: in the prior art, the preparation method of the temporary flame-retardant polyester fiber internal reinforced PVC waterproof coiled material cannot realize the improvement of the fireproof and flame-retardant effects.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a flame-retardant polyester fiber internal reinforced PVC waterproof coiled material, a preparation method and a system.
The flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material is prepared from, by mass, 10-20 parts of PVC resin powder, 3-7 parts of nano flame-retardant particles, 4-9 parts of kaolin, 3-4 parts of nano aluminum hydroxide, 1-3 parts of an antioxidant, 1-2 parts of a light stabilizer, 2-3 parts of a surfactant, 4-8 parts of talcum powder and 10-20 parts of polyester fiber.
The invention also aims to provide a preparation method of the flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material, which comprises the following steps:
step one, preparing nano flame-retardant particles: grinding and sieving nano-layered montmorillonite, mixing with water, and placing in a stirrer for high-speed stirring to obtain montmorillonite suspension; standing the montmorillonite suspension, taking supernatant, heating, and adding a modifier to complete layering; removing solid substances at the bottom, adding an organic silicon solvent into the upper layer liquid, uniformly stirring, and then placing in a drying box for drying and grinding to obtain silicon-containing powder; adding the organic silicon solvent into the silicon-containing powder again, uniformly stirring to obtain mixed slurry, and placing the mixed slurry into an extruder for extrusion forming to obtain nano flame-retardant particles;
step two, performing ball milling and calcining treatment on the kaolin to obtain the treated kaolin: placing kaolin into a ball mill, adding zirconium balls for ball milling to obtain kaolin fine powder; placing the kaolin fine powder into a calcining furnace, setting the heating rate to be 20-30 ℃/min for heating, keeping the temperature to be 300-350 ℃, and carrying out heat preservation for 10-30 min to finish primary calcining; setting the heating rate to be 30-40 ℃/min, continuing heating, keeping the temperature at 500-600 ℃, and keeping the temperature for 20-30 min to finish the second calcination to obtain calcined kaolin; sieving the calcined kaolin to obtain the treated kaolin;
step three, preparing mixed slurry by using PVC resin powder and nano flame-retardant particles as main raw materials: weighing PVC resin powder, nano flame-retardant particles, treated kaolin, nano aluminum hydroxide, an antioxidant, a light stabilizer, a surfactant and talcum powder according to the mass parts; heating PVC resin powder to a molten state to obtain PVC resin molten liquid; crushing the nano flame-retardant particles, adding the crushed nano flame-retardant particles into the PVC resin molten liquid, and uniformly stirring to obtain a base material; cooling the base material, adding the treated kaolin, nano aluminum hydroxide, light stabilizer, surfactant and talcum powder into the cooled base material, and uniformly stirring to obtain mixed slurry;
step four, preparing the flame-retardant polyester fiber internal reinforced PVC waterproof roll by using the mixed slurry and the polyester fiber: standing and cooling the mixed slurry, and cooling to room temperature for later use; mixing an antioxidant with water, stirring uniformly, and performing ultrasonic dispersion to obtain an antioxidant dispersion liquid; uniformly coating the surface of the cooled mixed slurry with an antioxidant dispersion liquid, placing the mixed slurry in a reaction kettle, heating and pressurizing to perform reaction, and taking out a product after the reaction is finished to obtain a coiled material; the coiled material is coated on the outer layer of the polyester fiber, namely the flame-retardant polyester fiber inner enhanced PVC waterproof coiled material.
Further, in the first step, the rotating speed of the high-speed stirring is 1000-1500 r/min.
Further, in the step one, the standing time is 20-50 min.
Further, in the first step, the temperature of the supernatant when the modifier is added is 80-90 ℃.
Further, in the second step, the ball milling pressure of the ball milling is 30-50N, and the ball milling time is 30-45 min.
Further, in the second step, the temperature of the calcining furnace is reduced before the calcined kaolin is screened.
Further, the cooling rate is 10-20 ℃/min.
Further, in the third step, the temperature of the cooled base material is 30-50 ℃.
Further, in the fourth step, the frequency of ultrasonic dispersion is 55-60 kHz, and the time is 10-20 min.
The invention also aims to provide a preparation system of the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material, which comprises the following steps:
nanometer fire-retardant granule preparation facilities: grinding and sieving nano-layered montmorillonite, mixing with water, and stirring at high speed in a stirrer to obtain montmorillonite suspension; standing the montmorillonite suspension, taking supernatant, heating, and adding a modifier to complete layering; removing solid substances at the bottom, adding an organic silicon solvent into the upper layer liquid, uniformly stirring, and then placing in a drying box for drying and grinding to obtain silicon-containing powder; adding the organic silicon solvent into the silicon-containing powder again, uniformly stirring to obtain mixed slurry, and placing the mixed slurry into an extruder for extrusion forming to obtain nano flame-retardant particles; the usage of the organic silicon solvent is detected by a flow detector, the detected data is sent to a flow controller, the flow controller controls a flow control valve according to the preset flow, and the control scheme of the flow controller comprises the following steps:
set initial point x0Convergence accuracy xi and dose data strain lower limit α, where
Figure BDA0002958578990000031
Figure BDA0002958578990000032
n1The number of the cable units is a combined structure, n2And n3Respectively the cross section sizes of the cable unit and the truss unit;
determining a gradient vector of the change of the quantity data with respect to the design variable at the R iteration based on the R th equilibrium state
Figure BDA0002958578990000041
Gradient vector of stress with respect to design variable
Figure BDA0002958578990000042
Gradient vector of accuracy with respect to design variable
Figure BDA0002958578990000043
And gradient vectors of the objective function with respect to the design variables
Figure BDA0002958578990000044
Solving the design variable correction quantity of the R time by adopting the following optimization model:
Figure BDA0002958578990000045
wherein the content of the first and second substances,
Figure BDA0002958578990000046
for the Rth design variable correction, W (x)R) System weight of Rth, gε(xR) For the change in dosage data of the R < th > time, hε(xR) Stress at Rth order, D (x)R) To the accuracy of the order of R, qpRepresenting upper and lower bound constraints, i.e. deltaxpmin≤δxp≤δxpmax；
Correcting the design variable after the R iteration to be xR+1＝xR+λ·δxRWherein the step factor lambda satisfies 0 < lambda < 1;
repeating the above processes until an optimal solution is obtained, and meeting a given convergence condition;
determining gradient vectors of dose data changes with respect to design variables
Figure BDA0002958578990000047
Gradient vector of stress with respect to design variable
Figure BDA0002958578990000048
Gradient vector of accuracy with respect to design variable
Figure BDA0002958578990000049
And gradient vectors of the objective function with respect to the design variables
Figure BDA00029585789900000410
The process of (1) is as follows:
gradient information is solved by adopting a difference method based on nonlinear finite elements, and analysis is carried out from a given equilibrium state, wherein the cable segment j (j is 1, 2, …, n)1) Has a strain of ∈0jThe stress of the cell j (j ═ 1, 2, …, NUE) is σ0jThe position of the node i (i ═ 1, 2, …, NUN) is z0i(ii) a Each time a variable increment delta is applied individually to the jth design variablex0jPerforming statics analysis to obtain new strain epsilon under equilibrium statejStress σjAnd position zi(ii) a Obtaining a gradient vector by a difference method; namely, the method comprises the following steps:
Figure BDA00029585789900000411
Figure BDA0002958578990000051
the kaolin acquisition device is used for carrying out ball milling and calcination treatment on kaolin to obtain the treated kaolin: placing kaolin into a ball mill, adding zirconium balls for ball milling to obtain kaolin fine powder; placing the kaolin fine powder into a calcining furnace, setting the heating rate to be 20-30 ℃/min for heating, keeping the temperature to be 300-350 ℃, and carrying out heat preservation for 10-30 min to finish primary calcining; setting the heating rate to be 30-40 ℃/min, continuously heating, keeping the temperature to be 500-600 ℃, and carrying out heat preservation for 20-30 min to finish the second calcination to obtain calcined kaolin; sieving the calcined kaolin to obtain the treated kaolin;
mix thick liquids preparation facilities uses PVC resin powder, fire-retardant granule of nanometer as the main raw materials preparation that mixes thick liquids: weighing PVC resin powder, nano flame-retardant particles, treated kaolin, nano aluminum hydroxide, an antioxidant, a light stabilizer, a surfactant and talcum powder according to the mass parts; heating PVC resin powder to a molten state to obtain PVC resin molten liquid; crushing the nano flame-retardant particles, adding the crushed nano flame-retardant particles into the PVC resin molten liquid, and uniformly stirring to obtain a base material; cooling the base material, adding the treated kaolin, nano aluminum hydroxide, light stabilizer, surfactant and talcum powder into the cooled base material, and uniformly stirring to obtain mixed slurry;
the coiled material acquisition device is used for preparing the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material by using the mixed slurry and the polyester fiber: standing and cooling the mixed slurry, and cooling to room temperature for later use; mixing an antioxidant with water, stirring uniformly, and performing ultrasonic dispersion to obtain an antioxidant dispersion liquid; uniformly coating the surface of the cooled mixed slurry with an antioxidant dispersion liquid, placing the mixed slurry in a reaction kettle, heating and pressurizing to perform reaction, and taking out a product after the reaction is finished to obtain a coiled material; the coiled material is coated on the outer layer of the polyester fiber, namely the flame-retardant polyester fiber inner enhanced PVC waterproof coiled material.
The invention also aims to provide a building flame-retardant waterproof insulation board and a board in a special environment of a petrochemical industry enterprise, which are prepared by using the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material. An isolation board applied in the field of fire prevention and water prevention.
By combining all the technical schemes, the invention has the advantages and positive effects that: the middle layer of the flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material is a flame-retardant polyester fiber fabric, and the outer layer of the middle layer is coated with a PVC layer, so that the improvement of fireproof and flame-retardant effects can be realized; materials with good flame retardant effect, such as an antioxidant, PVC resin, nano flame-retardant particles, kaolin and the like, are added in the preparation of the PVC layer, the prepared PVC layer can be effectively sealed and isolated, and the improvement of the fireproof effect is realized. The flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material provided by the invention is not only suitable for all applicable ranges of conventional PVC waterproof coiled materials, but also can be used in areas with fireproof requirements (such as petrochemical enterprises), and is low in cost and unaffected in processing performance.
The usage amount of the organic silicon solvent is detected by a flow detector, the detected data is sent to a flow controller, and the flow controller controls a flow control valve according to the preset flow, so that technical guarantee is provided for obtaining a plate with excellent performance.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.
Fig. 1 is a flowchart of a preparation method of a flame-retardant polyester fiber reinforced PVC waterproof roll according to an embodiment of the present invention.
FIG. 2 is a flow chart for preparing nano flame-retardant particles according to an embodiment of the present invention.
Fig. 3 is a flow chart of a kaolin ball-milling and calcining process according to an embodiment of the present invention.
Fig. 4 is a flow chart of a preparation process of a mixed slurry using PVC resin powder and nano flame retardant particles as main raw materials according to an embodiment of the present invention.
Fig. 5 is a flow chart of a preparation method of a flame-retardant polyester fiber reinforced PVC waterproof roll using a mixed slurry and polyester fibers according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Aiming at the problems in the prior art, the invention provides a flame-retardant polyester fiber internal reinforced PVC waterproof coiled material, a preparation method and a system, and the invention is described in detail with reference to the attached drawings.
The flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material provided by the embodiment of the invention comprises, by mass, 10-20 parts of PVC resin powder, 3-7 parts of nano flame-retardant particles, 4-9 parts of kaolin, 3-4 parts of nano aluminum hydroxide, 1-3 parts of an antioxidant, 1-2 parts of a light stabilizer, 2-3 parts of a surfactant, 4-8 parts of talcum powder and 10-20 parts of polyester fiber.
As shown in fig. 1, a preparation method of a flame-retardant polyester fiber internally-reinforced PVC waterproof roll according to an embodiment of the present invention includes the following steps:
s101, preparing nano flame-retardant particles;
s102, performing ball milling and calcining treatment on kaolin to obtain treated kaolin;
s103, preparing mixed slurry by using PVC resin powder and nano flame-retardant particles as main raw materials;
and S104, preparing the flame-retardant polyester fiber internal reinforced PVC waterproof roll by using the mixed slurry and the polyester fiber.
As shown in fig. 2, the preparation of the nano flame retardant particles provided by the embodiment of the present invention includes:
s201, grinding and sieving nano layered montmorillonite, mixing with water, and placing the mixture in a stirrer for high-speed stirring to obtain montmorillonite suspension;
s202, standing the montmorillonite suspension, taking supernatant, heating, and adding a modifier to complete layering;
s203, removing solid substances at the bottom, adding an organic silicon solvent into the upper layer liquid, uniformly stirring, and then placing in a drying box for drying and grinding to obtain silicon-containing powder;
and S204, adding the organic silicon solvent into the silicon-containing powder again, uniformly stirring to obtain mixed slurry, and extruding and molding the mixed slurry in an extruder to obtain the nano flame-retardant particles.
In step S201, the high-speed stirring provided by the embodiment of the invention has a rotating speed of 1000-1500 r/min.
In step S202, the standing time provided by the embodiment of the present invention is 20 to 50 min.
In step S202, the temperature of the supernatant when the modifier provided in the embodiment of the present invention is added is 80 to 90 ℃.
As shown in fig. 3, the ball milling and calcining processes performed on kaolin according to the embodiment of the present invention to obtain the treated kaolin include:
s301, placing kaolin into a ball mill, adding zirconium balls, and carrying out ball milling to obtain kaolin fine powder;
s302, placing the kaolin fine powder into a calcining furnace, setting the heating rate to be 20-30 ℃/min for heating, keeping the temperature to be 300-350 ℃, and carrying out heat preservation for 10-30 min to finish primary calcining;
s303, setting the heating rate to be 30-40 ℃/min, continuing to heat, keeping the temperature to be 500-600 ℃, and preserving the heat for 20-30 min to finish secondary calcination to obtain calcined kaolin;
s304, sieving the calcined kaolin to obtain the treated kaolin.
In step S301, the ball milling pressure of the ball milling provided by the embodiment of the present invention is 30 to 50N, and the ball milling time is 30 to 45 min.
In step S304, before the calcined kaolin is screened, the temperature of the calciner is reduced.
The cooling rate provided by the embodiment of the invention is 10-20 ℃/min.
As shown in fig. 4, the preparation of the mixed slurry using PVC resin powder and nano flame retardant particles as main raw materials according to the embodiment of the present invention includes:
s401, weighing PVC resin powder, nano flame-retardant particles, treated kaolin, nano aluminum hydroxide, an antioxidant, a light stabilizer, a surfactant and talcum powder according to parts by mass;
s402, heating PVC resin powder to a molten state to obtain PVC resin molten liquid;
s403, crushing the nano flame-retardant particles, adding the crushed nano flame-retardant particles into the PVC resin molten liquid, and uniformly stirring to obtain a base material;
s404, cooling the base material, adding the treated kaolin, the nano aluminum hydroxide, the light stabilizer, the surfactant and the talcum powder into the cooled base material, and uniformly stirring to obtain mixed slurry.
In step S404, the temperature of the cooled base material is 30-50 ℃.
As shown in fig. 5, the preparation of the flame-retardant polyester fiber reinforced PVC waterproof roll using the mixed slurry and the antioxidant according to the embodiment of the present invention includes:
s501, standing and cooling the mixed slurry to room temperature for later use;
s502, mixing an antioxidant with water, uniformly stirring, and performing ultrasonic dispersion to obtain an antioxidant dispersion liquid;
s503, uniformly coating an antioxidant dispersion liquid on the surface of the cooled mixed slurry, placing the mixed slurry in a reaction kettle, heating and pressurizing to perform reaction, and taking out a product after the reaction is finished to obtain a coiled material;
s504, the coiled material is coated on the outer layer of the polyester fiber, namely the flame-retardant polyester fiber inner enhanced PVC waterproof coiled material.
In step S502, the frequency of ultrasonic dispersion provided by the embodiment of the invention is 55-60 kHz, and the time is 10-20 min.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made by those skilled in the art within the technical scope of the present invention disclosed herein, which is within the spirit and principle of the present invention, should be covered by the present invention.

Claims (10)

1. The preparation method of the flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material is characterized by comprising the following steps of:
step one, preparing nano flame-retardant particles: grinding and sieving nano-layered montmorillonite, mixing with water, and placing in a stirrer for high-speed stirring to obtain montmorillonite suspension; standing the montmorillonite suspension, taking supernatant, heating, and adding a modifier to complete layering; removing solid substances at the bottom, adding an organic silicon solvent into the upper layer liquid, uniformly stirring, and then placing in a drying box for drying and grinding to obtain silicon-containing powder; adding the organic silicon solvent into the silicon-containing powder again, uniformly stirring to obtain mixed slurry, and placing the mixed slurry into an extruder for extrusion forming to obtain nano flame-retardant particles;
step two, performing ball milling and calcining treatment on the kaolin to obtain the treated kaolin: placing kaolin into a ball mill, adding zirconium balls for ball milling to obtain kaolin fine powder; placing the kaolin fine powder into a calcining furnace, setting the heating rate to be 20-30 ℃/min for heating, keeping the temperature to be 300-350 ℃, and carrying out heat preservation for 10-30 min to finish primary calcining; setting the heating rate to be 30-40 ℃/min, continuously heating, keeping the temperature to be 500-600 ℃, and carrying out heat preservation for 20-30 min to finish the second calcination to obtain calcined kaolin; sieving the calcined kaolin to obtain the treated kaolin;
step three, preparing mixed slurry by using PVC resin powder and nano flame-retardant particles as main raw materials: weighing PVC resin powder, nano flame-retardant particles, treated kaolin, nano aluminum hydroxide, an antioxidant, a light stabilizer, a surfactant and talcum powder according to the mass parts; heating PVC resin powder to a molten state to obtain PVC resin molten liquid; crushing the nano flame-retardant particles, adding the crushed nano flame-retardant particles into the PVC resin molten liquid, and uniformly stirring to obtain a base material; cooling the base material, adding the treated kaolin, nano aluminum hydroxide, light stabilizer, surfactant and talcum powder into the cooled base material, and uniformly stirring to obtain mixed slurry;
step four, preparing the flame-retardant polyester fiber internal reinforced PVC waterproof roll by using the mixed slurry and the polyester fiber: standing and cooling the mixed slurry, and cooling to room temperature for later use; mixing an antioxidant with water, stirring uniformly, and performing ultrasonic dispersion to obtain an antioxidant dispersion liquid; uniformly coating the surface of the cooled mixed slurry with an antioxidant dispersion liquid, placing the mixed slurry in a reaction kettle, heating and pressurizing to perform reaction, and taking out a product after the reaction is finished to obtain a coiled material; the coiled material is coated on the outer layer of the polyester fiber, namely the flame-retardant polyester fiber inner enhanced PVC waterproof coiled material.
2. The preparation method of the flame-retardant polyester fiber internally-reinforced PVC waterproof roll according to claim 1, wherein in the first step, the high-speed stirring is performed at a rotation speed of 1000 to 1500 r/min;
in the first step, the standing time is 20-50 min;
in the first step, the temperature of the supernatant is 80-90 ℃ when the modifier is added.
3. The preparation method of the flame-retardant polyester fiber internally-reinforced PVC waterproof roll material according to claim 1, wherein in the second step, the ball milling pressure of the ball milling is 30-50N, and the ball milling time is 30-45 min;
in the second step, before sieving the calcined kaolin, cooling the calciner;
the cooling rate is 10-20 ℃/min.
4. The method for preparing the flame-retardant polyester fiber internally-reinforced PVC waterproof roll according to claim 1, wherein in the third step, the temperature of the cooled base material is 30-50 ℃.
5. The preparation method of the flame-retardant polyester fiber internally-reinforced PVC waterproof roll according to claim 1, wherein in the fourth step, the ultrasonic dispersion frequency is 55 to 60kHz, and the time is 10 to 20 min.
6. The flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material is characterized by comprising, by mass, 10-20 parts of PVC resin powder, 3-7 parts of nano flame-retardant particles, 4-9 parts of kaolin, 3-4 parts of nano aluminum hydroxide, 1-3 parts of an antioxidant, 1-2 parts of a light stabilizer, 2-3 parts of a surfactant, 4-8 parts of talcum powder and 10-20 parts of polyester fiber.
7. The utility model provides a preparation system of enhancement mode PVC waterproofing membrane in fire-retardant type polyester fiber which characterized in that, preparation system of enhancement mode PVC waterproofing membrane in fire-retardant type polyester fiber includes:
nanometer fire-retardant granule preparation facilities: grinding and sieving nano-layered montmorillonite, mixing with water, and stirring at high speed in a stirrer to obtain montmorillonite suspension; standing the montmorillonite suspension, taking supernatant, heating, and adding a modifier to complete layering; removing solid substances at the bottom, adding an organic silicon solvent into the upper layer liquid, uniformly stirring, and then placing in a drying box for drying and grinding to obtain silicon-containing powder; adding the organic silicon solvent into the silicon-containing powder again, uniformly stirring to obtain mixed slurry, and placing the mixed slurry into an extruder for extrusion forming to obtain nano flame-retardant particles; the usage of the organic silicon solvent is detected by a flow detector, the detected data is sent to a flow controller, the flow controller controls a flow control valve according to the preset flow, and the control scheme of the flow controller comprises the following steps:
set initial point x0Convergence accuracy xi and dose data strain lower limit α, where
Figure FDA0002958578980000031
Figure FDA0002958578980000032
n1The number of the cable units is a combined structure, n2And n3Respectively the cross section sizes of the cable unit and the truss unit;
determining a gradient vector of the change of the quantity data with respect to the design variable at the R iteration based on the R th equilibrium state
Figure FDA0002958578980000033
Gradient vector of stress with respect to design variable
Figure FDA0002958578980000034
Gradient vector of accuracy with respect to design variable
Figure FDA0002958578980000035
And gradient vectors of the objective function with respect to the design variables
Figure FDA0002958578980000036
Solving the design variable correction quantity of the R time by adopting the following optimization model:
Figure FDA0002958578980000037
wherein the content of the first and second substances,
Figure FDA0002958578980000038
for the Rth design variable correction, W (x)R) System weight of Rth, ge(xR) For the change in dosage data of the R < th > time, he(xR) Stress at Rth order, D (x)R) To the accuracy of the order of R, qpRepresenting upper and lower bound constraints, i.e. deltaxpmin≤δxp≤δxpmax；
Correcting the design variable after the R iteration to be xR+1＝xR+λ·δxRWherein the step factor lambda satisfies 0 < lambda < 1;
repeating the above processes until an optimal solution is obtained, and meeting a given convergence condition;
determining gradient vectors of dose data changes with respect to design variables
Figure FDA0002958578980000039
Gradient vector of stress with respect to design variable
Figure FDA00029585789800000310
Gradient vector of accuracy with respect to design variable
Figure FDA00029585789800000311
And gradient vectors of the objective function with respect to the design variables
Figure FDA00029585789800000312
The process of (1) is as follows:
gradient information is solved by adopting a difference method based on nonlinear finite elements, and analysis is carried out from a given equilibrium state, wherein the cable segment j (j is 1, 2, …, n)1) Has a strain of ∈0jThe stress of the cell j (j ═ 1, 2, …, NUE) is σ0jThe position of the node i (i ═ 1, 2, …, NUN) is z0i(ii) a Each time a variable increment Δ x is applied individually to the jth design variable0jPerforming statics analysis to obtain new strain epsilon under equilibrium statejStress σjAnd position zi(ii) a Obtaining a gradient vector by a difference method; namely, the method comprises the following steps:
Figure FDA0002958578980000041
Figure FDA0002958578980000042
the kaolin acquisition device is used for carrying out ball milling and calcination treatment on kaolin to obtain the treated kaolin: placing kaolin into a ball mill, adding zirconium balls for ball milling to obtain kaolin fine powder; placing the kaolin fine powder into a calcining furnace, setting the heating rate to be 20-30 ℃/min for heating, keeping the temperature to be 300-350 ℃, and carrying out heat preservation for 10-30 min to finish primary calcining; setting the heating rate to be 30-40 ℃/min, continuously heating, keeping the temperature to be 500-600 ℃, and carrying out heat preservation for 20-30 min to finish the second calcination to obtain calcined kaolin; sieving the calcined kaolin to obtain the treated kaolin;
mix thick liquids preparation facilities uses PVC resin powder, fire-retardant granule of nanometer as the main raw materials preparation that mixes thick liquids: weighing PVC resin powder, nano flame-retardant particles, treated kaolin, nano aluminum hydroxide, an antioxidant, a light stabilizer, a surfactant and talcum powder according to the mass parts; heating PVC resin powder to a molten state to obtain PVC resin molten liquid; crushing the nano flame-retardant particles, adding the crushed nano flame-retardant particles into the PVC resin molten liquid, and uniformly stirring to obtain a base material; cooling the base material, adding the treated kaolin, nano aluminum hydroxide, light stabilizer, surfactant and talcum powder into the cooled base material, and uniformly stirring to obtain mixed slurry;
the coiled material acquisition device is used for preparing the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material by using the mixed slurry and the polyester fiber: standing and cooling the mixed slurry, and cooling to room temperature for later use; mixing an antioxidant with water, stirring uniformly, and performing ultrasonic dispersion to obtain an antioxidant dispersion liquid; uniformly coating the surface of the cooled mixed slurry with an antioxidant dispersion liquid, placing the mixed slurry in a reaction kettle, heating and pressurizing to perform reaction, and taking out a product after the reaction is finished to obtain a coiled material; the coiled material is coated on the outer layer of the polyester fiber, namely the flame-retardant polyester fiber inner enhanced PVC waterproof coiled material.
8. A flame-retardant waterproof insulation board for buildings, which is prepared by using the flame-retardant polyester fiber internally-reinforced PVC waterproof coiled material of claim 6.
9. A plate prepared by the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material according to claim 6 in special environment of petrochemical enterprises.
10. An insulation board which is prepared by the flame-retardant polyester fiber internal reinforced PVC waterproof coiled material of claim 6 and is applied to the fields of fire prevention and water prevention.
CN202110232985.0A 2021-03-02 2021-03-02 Flame-retardant polyester fiber internal reinforced PVC (polyvinyl chloride) waterproof coiled material, preparation method and system Pending CN112852072A (en)

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